Automatic presentations for semigroups
Automatic presentations for semigroups
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半群的自动呈现
DOI:
10.1016/j.ic.2009.02.005
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
R. Thomas
中科院分区:
文献类型:
--
作者:
Alan J. Cain;G. Oliver;N. Ruškuc;R. Thomas
This paper applies the concept of FA-presentable structures to semigroups. We give a complete classification of the finitely generated FA-presentable cancellative semigroups: namely, a finitely generated cancellative semigroup is FA-presentable if and only if it is a subsemigroup of a virtually abelian group. We prove that all finitely generated commutative semigroups are FA-presentable. We give a complete list of FA-presentable one-relation semigroups and compare the classes of FA-presentable semigroups and automatic semigroups.